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Best Answer Key Apps

250+ iOS apps curated and reviewed

4.7 avg rating
19 free apps
Updated August 2026

Every iPhone needs a few good answer key apps. We benchmark 250+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Answer Key Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Gauth: AI Study CompanionGauth: AI Study CompanionFree4.8★ (1.5M)NoYesAug 2026
2Pic Answer - AI SolverPic Answer - AI SolverFree4.6★ (3.4K)NoYesAug 2026
3Ai Homework Helper: Scan SolveAi Homework Helper: Scan SolveFree4.7★ (21K)NoYesAug 2026
4Brainly: Your Personal TutorBrainly: Your Personal TutorFree4.7★ (284K)YesYesAug 2026
5Answer - The fastest free calculator that gives the answer in an instant -Answer - The fastest free calculator that gives the answer in an instant -Free——NoMay 2026
6Quizard AI: Homework HelperQuizard AI: Homework HelperFree4.7★ (58K)YesYesAug 2026
7KeyKeyFree—NoNoMay 2026
8Colmobil KeyColmobil KeyFree—NoNoMay 2026

Top Picks for Answer Key

Gauth: AI Study Companion#1

Gauth: AI Study Companion by GAUTHTECH PTE. LTD.

Step-by-Step Study Guidance
Editor's Choice
📚 Education
4.8😊(1.5M ratings)
FreeIn-App Purchases
#8in Education
Gauth: AI Study Companion screenshot 1
Gauth: AI Study Companion screenshot 2
Gauth: AI Study Companion screenshot 3
Gauth: AI Study Companion screenshot 4
Gauth: AI Study Companion screenshot 5
Gauth: AI Study Companion screenshot 6

This AI-powered study companion provides instant, accurate answers and step-by-step explanations for all subjects. It offers a live AI tutor with voice and whiteboard capabilities, and can convert notes into quizzes and flashcards. Get help with homework, writing, and calculations from experts 24/7.

What We Love

  • 🚀 Helpful for homework and understanding concepts
  • 🚀 Provides step-by-step explanations
  • 🚀 Accurate answers most of the time
  • 👍 Free to use with optional premium features

Room to Improve

  • 🐛 Inaccurate answers at times
  • 🐛 Tutors sometimes provide wrong or irrelevant responses
  • 🔒 Paywall for advanced features and tutoring
Pic Answer - AI Solver#2

Pic Answer - AI Solver by Tech Consolidated Inc

Math Photo Solve your Homework
Strong Contender
📚 Education
4.6😊(3.4K ratings)
FreeIn-App Purchases
Pic Answer - AI Solver screenshot 1
Pic Answer - AI Solver screenshot 2
Pic Answer - AI Solver screenshot 3
Pic Answer - AI Solver screenshot 4
Pic Answer - AI Solver screenshot 5
Pic Answer - AI Solver screenshot 6

This application uses AI to solve homework problems by analyzing photos. It offers instant solutions and interactive chat assistance across multiple academic subjects, aiming to deepen understanding of concepts.

What We Love

  • 🚀 Fast and accurate answers
  • 👍 Helpful for homework and studying
  • 💡 Explains step-by-step solutions
  • 🎓 Improves grades and academic performance

Room to Improve

  • 🐛 Occasional inaccurate answers
  • 💰 Subscription/payment issues
  • 🔄 Inconsistent performance after updates
Ai Homework Helper: Scan Solve#3

Ai Homework Helper: Scan Solve by hossam sherraa

Ai Scanner & Pic Answer
Worth Considering
📚 Education
4.7😊(21K ratings)
FreeIn-App Purchases
Ai Homework Helper: Scan Solve screenshot 1
Ai Homework Helper: Scan Solve screenshot 2
Ai Homework Helper: Scan Solve screenshot 3
Ai Homework Helper: Scan Solve screenshot 4

Instantly get answers to your questions by simply taking a photo. This intelligent app uses AI to recognize text and objects in images, providing accurate information and enabling natural conversations for deeper learning.

What We Love

  • 👍 Helpful for homework and assignments
  • 🚀 Fast and accurate answers
  • 💡 Explains step-by-step solutions
  • 🙌 Saves time and effort

Room to Improve

  • 💰 Limited free usage, requires premium subscription
  • 🐛 Occasional inaccurate or inconsistent answers
  • 🤔 Issues with camera functionality and scanning

More Answer Key apps to explore

4
Brainly: Your Personal Tutor
Brainly: Your Personal Tutor
Brainly: Your Personal Tutor
Homework Helper & Test Prep
Free

This app provides 24/7 on-demand tutoring for K-12 students in subjects like math, science, and English. It combines human tutors with AI support to offer step-by-step explanations for homework and test preparation, aiming for guaranteed grade improvement.

24/7 on-demand tutoringHuman tutors and AI supportStep-by-step explanations
📚 Education
(284K)
free with in-app purchases
5
Answer - The fastest free calculator that gives the answer in an instant -
Answer - The fastest free calculator that gives the answer in an instant -
Answer - The fastest free calculator that gives the answer in an instant -
by CloudSquare Inc.
Free
💰 Finance
(0)
6
Quizard AI: Homework Helper
Quizard AI: Homework Helper
Quizard AI: Homework Helper
Instant Math Problem Solver
Free

This AI-powered app assists students with homework and studying across various subjects. It offers instant solutions and explanations for math problems by simply taking a photo, helping users prepare for tests and improve their grades.

AI homework answersInstant math problem solverPhoto-based math solutions
📚 Education
(58K)
free with in-app purchases
7
Key
Key
Key
by Interflex Datensysteme GmbH
Free

Transform your iPhone into a mobile ID card for convenient door access. Securely register your credentials and use your phone to open doors, leveraging advanced encrypted transfer technology.

Smartphone as mobile IDConvenient door openingSecure credential transfer
🔧 Utilities
(0)
free
8
Colmobil Key
Colmobil Key
Colmobil Key
by Ituran GPS
Free
🌟 Lifestyle
(0)
9
OnKey: Work Answers & Updates
OnKey: Work Answers & Updates
OnKey: Work Answers & Updates
What you need when you need it
Free
💼 Business
(0)
10
APM Key
APM Key
APM Key
User App for Multi-family
Free
🌟 Lifestyle
(0)
11
INTELITY Mobile Key
INTELITY Mobile Key
INTELITY Mobile Key
by Intelity Solutions
Free
✈️ Travel
(0)
12
KeyNest - AI API Key Manager
KeyNest - AI API Key Manager
KeyNest - AI API Key Manager
Secure Vault, Test & Balance
Free
🛠️ Developer Tools
(0)
13
Mathway: Math Problem Solver
Mathway: Math Problem Solver
Mathway: Math Problem Solver
Homework scanner & calculator
Free

Solve math problems instantly by taking a photo or typing your question. Get step-by-step solutions for algebra, graphing, calculus, and more. Understand complex math concepts with unlimited access to answers.

Math problem solverHomework scannerStep-by-step solutions
📚 Education
(425K)
free with in-app purchases
14
KeyPlus2 - Digital Key
KeyPlus2 - Digital Key
KeyPlus2 - Digital Key
by Special One Co., Ltd.
Free

Easily control and share car doors using just your phone. Transform your vehicle into a smart car with this application.

Digital car door controlShare car access remotelyTransform car into smart car
🌟 Lifestyle
(0)
free
15
Alfred Key
Alfred Key
Alfred Key
by PREVIO s.r.o.
Free

Transform your phone into a digital key for hotel rooms. Access your room using Bluetooth locks without needing a physical key. This app simplifies hotel stays by making your smartphone your sole access method.

Use phone as hotel keyBluetooth lock accessEliminate physical keys
✈️ Travel
(0)
free
16
Key Retrieve
Key Retrieve
Key Retrieve
by Farren Domenici
$9.99
📊 Productivity
(0)
17
KeyBoy - Automatic key locker
KeyBoy - Automatic key locker
KeyBoy - Automatic key locker
by Antti Immonen
Free
🔧 Utilities
(0)
18
Bodhi Key
Bodhi Key
Bodhi Key
Open Sesame. No Key, No Hassle
Free
✈️ Travel
(0)
19
Keyz: Keycap Fidget
Keyz: Keycap Fidget
Keyz: Keycap Fidget
Keycap Fidget
Free

Experience the satisfying click of mechanical keyboards on your phone. Customize keycaps, backgrounds, and sounds for a personalized fidgeting experience. Unlock daily rewards and track your taps.

Customizable keycap and background skinsMultiple sound packs including mechanical and typewriterLED backlight mode
🎬 Entertainment
(0)
free with in-app purchases
20
Maverick Key Cutting Machine
Maverick Key Cutting Machine
Maverick Key Cutting Machine
by Lock Labs, Inc.
Free
🔧 Utilities
(0)

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FAQ about Answer Key

What are the best answer key apps for iPhone?
Gauth: AI Study Companion tops our answer key apps ranking as of August 2026, with a 4.8-star average from 1.5M App Store ratings, and it's free to download.
Yes — 19 of the top answer key apps we rank are free to download, including Gauth: AI Study Companion and Pic Answer - AI Solver.
Gauth: AI Study Companion has no ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 250+ answer key apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Gauth is an AI study companion that provides instant, accurate answers and step-by-step explanations for homework problems across various subjects. It also offers AI tutoring, study tools, and access to real experts for additional help.
Key features include AI-powered accurate answers with animated instructions, an AI Live Tutor with voice and whiteboard, an AI Study Converter to create quizzes and flashcards from notes, and a study toolbox with reading, writing, and calculator functions.